4l65e Automatic Transmission

[Bruce668]

I sent my truck to the garage to have brake line's replaced and transmission serviced . Before I sent it to garage ,I had front wheel speed sensor codes and radio speaker codes but truck run fine and never had ANY transmission problems . When I got my truck back , I had drove it for about 10 day's when out of no where , my transmission jumped out of drive . I pulled my truck over and it acted like it was in neutral . If I manually shift, I will have 1st gear with no problems , second gear has a scrubbing noise from about 10 mph to about 25 mph and the noise stops , I can shift into 3rd gear when I get to about 40 mph and it runs as if nothing is wrong until I drop back down to 40 mph and there it Slip's out of gear . There's no Drive but I have reverse. Only code that is shown that I didn't have before I went to the garage is for the rear speed sensor and I changed that sensor but still have the code. The right front bearing and speed sensor are almost new and it had that code before I went to the garage . I can't find a bad wire or connection for the sensors. What's causing my transmission trouble ? I thank you for your time in reading my post.

 

[Bartman39]

Ok what truck is it...? Details would help a bunch...

The issue sounds like a solenoid has gone out...? But without the information on the truck cant say for sure...?

 

[dave_the_nerd]

Ok what truck is it...? Details would help a bunch...

The issue sounds like a solenoid has gone out...? But without the information on the truck cant say for sure...?

Google says it's probably a Silverado. Unless it's an SUV and not a truck truck.

 

[Bruce668]

It's a 2006 Chevy Silverado 1500 4.3 2 wheel drive. Never any transmission slippage . as I've said only codes are for radio and wheel speed sensors. And done change both shift solenoids . I feel like it could be something to do with the filter but I'm not a transmission guy and I'm not sure what causes the scrubbing noise in 2nd gear only.

 

[mizzou]

what was the transmission service you had performed?

On some high mileage truck trannys its acually a risk having a flush performed. The new fluid and flush knocks he gunk out thats actually keeping your transmission operating "normally"

 

[BUTCH1]

what was the transmission service you had performed?

On some high mileage truck trannys its acually a risk having a flush performed. The new fluid and flush knocks he gunk out thats actually keeping your transmission operating "normally"

Yup, actually on ANY tranny with high miles and few services to the tranny it's a bad idea. Unless you have flushes started at 30K and done regularly I would never have it done. this is a huge $$ maker for dealers/oil change places but few if any manufacturer's approve of flushing. At least with hid RWD vehicle the valve body is accessible, in a FWD application it's commonly not, maybe he can have the pan dropped and the valve body inspected.

 

[Bruce668]

The truck has 165,000 miles and has never been driven rough but fluid hadn't been changed in 80,000 miles . There was very little shavings/dust in the bottom of the pan .

 

[Bruce668]

Yup, actually on ANY tranny with high miles and few services to the tranny it's a bad idea. Unless you have flushes started at 30K and done regularly I would never have it done. this is a huge $$ maker for dealers/oil change places but few if any manufacturer's approve of flushing. At least with hid RWD vehicle the valve body is accessible, in a FWD application it's commonly not, maybe he can have the pan dropped and the valve body inspected.[/QU

what was the transmission service you had performed?

On some high mileage truck trannys its acually a risk having a flush performed. The new fluid and flush knocks he gunk out thats actually keeping your transmission operating "normally"

 

[Bruce668]

I had transmission filter and fluid change / around 5 quarts.

 

[mizzou]

I had transmission filter and fluid change / around 5 quarts.

im going to assume your service unraveled it...unfortunately.

I love gmt800 trucks but I really dont think a 4liter LS engine w/ 2wd will be worth the money to replace the transmission.

sorry bud!

 

[FelixDeCat]

Everything you ever wanted to know about transmission flushes. I had mine done at 90,000 miles at the dealer for $199. Fluid was dark red.

 

[Bruce668]

I don't want to be disrespectful to anyone but someone telling me, my truck's not work fixing just don't understand. my Father died 4 year's ago and he bought me this truck during dark time's in my life, so to me it's totally worth fixing .

 

[RLGL]

Drop a re-man tranny in it.

 

[mizzou]

oh by all means you can keep up the repairs! Its just my knowledge of those tucks is that you might be past the fix it scrap it or sell it margin. The blue book of the 2wd truck with the small engine should be pretty small.

If you do get it replaced...im very interested in the cost

I just checked Cargurus and you could probably pull 5k if you truck is in decent shape...thats way more then I thought. If you want to keep it thats fine, but dont get too attached to a car ever...especially a basic work truck.

 

[Pacfanweb]

The truck has 165,000 miles and has never been driven rough but fluid hadn't been changed in 80,000 miles . There was very little shavings/dust in the bottom of the pan .

It's likely not the fluid change that caused it. (and 80k isn't that much over.) That's mostly a myth. If your trans fluid hasn't been changed either ever, or in way too many miles, then you change it and it develops a problem....it was already on death's door and was going to fail anyway.
It CAN happen....but every day there are fluid changes done on neglected transmissions with no problems. You only hear about the ones that failed later.

That said, if you do a FLUSH on a high-mileage tranny, that's all new fluid in there and if anything IS going to cause and issue, that's the one that would cause it, and some makers say do not flush, ever.

Question is, was it flushed or did they drop the pan and change the filter and some of the fluid? GM specifically says do NOT do a flush, change fluid and filter only.

And, have you taken it back to them? That's the first thing you should have done, let them re-check their work and make sure it's all "right".

 

[bradly1101]

Yup, actually on ANY tranny with high miles and few services to the tranny it's a bad idea. Unless you have flushes started at 30K and done regularly I would never have it done. this is a huge $$ maker for dealers/oil change places but few if any manufacturer's approve of flushing. At least with hid RWD vehicle the valve body is accessible, in a FWD application it's commonly not, maybe he can have the pan dropped and the valve body inspected.

Hmmm. My Previa was flushed for the first time at 130K. No issues.

The tranny on my Sienna is sealed tight and has no dipstick. I don't even remember a change interval in the manual. Lifetime fluid?

 

[dave_the_nerd]

Lifetime fluid?

They claim that, but if you want it to last past 250k you should do regular services just you like you would an "old fashioned" transmission.

Same deal with 10k mile oil changes. Sure, the engine will last 150-200k miles doing that, but then it catches up with you.

 

[BUTCH1]

Hmmm. My Previa was flushed for the first time at 130K. No issues.

The tranny on my Sienna is sealed tight and has no dipstick. I don't even remember a change interval in the manual. Lifetime fluid?

t's not that something will go wrong, it's risky that something CAN go wrong. Oh, my GM has no dipstick as well and I got the "sealed unit" story as well, I did a change at 50K and again at 90K, none of them are truly "sealed" since it must have the ability to vent to atmosphere, (to equalize pressure as fluid moves about). I think the no dipstick was to avoid people adding in "universal" type fluid or not following proper procedure when checking level, I was furious when I found out mine had no stick!. If you plan on keeping your Sienna into high mileage I'd get the fluid/filter changed and not at a Jiffy-lube.

 

[bradly1101]

t's not that something will go wrong, it's risky that something CAN go wrong. Oh, my GM has no dipstick as well and I got the "sealed unit" story as well, I did a change at 50K and again at 90K, none of them are truly "sealed" since it must have the ability to vent to atmosphere, (to equalize pressure as fluid moves about). I think the no dipstick was to avoid people adding in "universal" type fluid or not following proper procedure when checking level, I was furious when I found out mine had no stick!. If you plan on keeping your Sienna into high mileage I'd get the fluid/filter changed and not at a Jiffy-lube.

Thanks, and yes I have a place that hasn't done me wrong. Off topically I have a friend who had an Element (interesting, no longer sold, car) that the Jiff guys stripped the drain bolt on and didn't tell her. All the oil leaked out on the freeway. Cool.

 

[bradly1101]

They claim that, but if you want it to last past 250k you should do regular services just you like you would an "old fashioned" transmission.

Same deal with 10k mile oil changes. Sure, the engine will last 150-200k miles doing that, but then it catches up with you.

At 130K the Pevia's was very black. My very low miles now, somewhat advanced age, and reliable car mean that I may never hit 50K for a change. I hope it's not like oil and should follow a time-based interval too. Monday will be her 1st oil change at 1.3 yrs./<600 mi. I read that Mobil 1 isn't pure synthetic (my car's rec.), and in a few super detailed analysis and breakdown tests, Valvoline Syn-Power (full synthetic) did very well. I always buy my supplies then give them to my regular guy. He charges me $25 (supplies ~$90).

 

[bradly1101]

[no endorsement for products, just research]

 

[BUTCH1]

Thanks, and yes I have a place that hasn't done me wrong. Off topically I have a friend who had an Element (interesting, no longer sold, car) that the Jiff guys stripped the drain bolt on and didn't tell her. All the oil leaked out on the freeway. Cool.

They caught Jiffy-lube on hidden camera charging customers for a tranny flush and just not doing it, my brother had his oil changed at one and the next AM he found a puddle of oil under the car, they didn't tighten the drain bolt and it was hanging on by one thread. I'm not saying all JL's are like that but they are paying their workers $10/hr and pumping through as many cars as possible, it's good you found a local guy to work on your vehicles.

 

[thecoolnessrune]

A Jiffy-Lube my grandfather went to years ago stripped the drain bolt on his rear differentials, causing it to leak oil. We eventually got them to refund the cost of a new OEM rear diff cover and drain bolt, and had our local mechanic change it out. I've never been to one of those places with my cars, and pretty sure I never will.

 

[RLGL]

My daughter took her Honda Accord to a local in IA, they stripped the oil drain plug. Took the 2 days to get a replacement pan installed.

 

[BUTCH1]

A Jiffy-Lube my grandfather went to years ago stripped the drain bolt on his rear differentials, causing it to leak oil. We eventually got them to refund the cost of a new OEM rear diff cover and drain bolt, and had our local mechanic change it out. I've never been to one of those places with my cars, and pretty sure I never will.

Were they just topping off the gear oil?.